【龙腾顺达】高碳含量石墨化增碳剂 高效增碳剂
钢铁业在铸造、铸铁、铸钢、铸件会有对碳的一个要求，那么增碳剂顾名思义就是来增加铁液中的碳含量，又比如说，在熔炼中常用炉料为生铁、废钢、回炉料，生铁的碳含量高，但是却采购价格相对废钢来说是要高出一节的，所以增加废钢投放量，降低生铁投放量，加增碳剂，能起到一定的降低铸件成本的作用。
在冶炼过程中，由于配料或装料不当以及脱碳过量等原因，有时造成钢中碳含量没有达到顶期的要求，这时要向钢液中增碳。常用的增碳剂有增碳生铁、电极粉、石油焦粉、木炭粉和焦炭粉。转炉冶炼中、高碳钢种时，使用含杂质很少的石油焦作为增碳剂。对顶吹转炉炼钢用增碳剂的要求是固定碳要高，灰分、挥发分和硫、磷、氮等杂质含量要低，且干燥、干净、粒度适中。
增碳剂可分为以下几类：
1、【石墨增碳剂】
固定碳 | ≥98.5% | 灰分 | ≤0.5% |
挥发分 | ≤0.5% | 硫 | ≤0.05% |
水分 | ≤0.5% | 氮 | ≤0.03%（300ppm） |
2、【石油焦增碳剂】
测试数据 | 参数 | 测试数据 | 参数 |
硫含量 | 0.5-3 | 挥发分 | 12-18 |
灰分 | 0.3-1.2 | 水分 | ≤3 |
硅含量 | ≤0.08 | 铁含量 | ≤0.08 |
真密度 | 2.08-0.13 | 粉焦量 | 25% |
3、【煤质增碳剂】
固 定 碳 | 90-95% | 挥发分 | 0.5-1.5% |
灰 分 | 3-7% | 水 分 | ≤0.5% |
硫 | ≤0.3% | 粒度：0-10mm按客户需求定制 |
增碳剂的使用：
一、炉内投入法：
增碳剂适于在感应炉中熔炼使用，但依据工艺要求具体使用也不尽相同。
１、在中频电炉熔炼中使用增碳剂，可按配比或碳当量要求随料加入电炉中下部位，回收率可达95%以上；
２、如果碳量不足调整碳分时，先打净炉中熔渣，再加增碳剂，通过铁液升温，电磁搅拌或人工搅拌使碳溶解吸收，回收率可在90%左右，如果采用低温增碳工艺，即炉料只熔化一部分，熔化的铁液温度较低的情况下，全部增碳剂一次性加入铁液中，同时用固体炉料将其压入铁液中不让其露出铁液表面。这种方法铁液增碳可达1.0%以上。
二、炉外增碳：
１、包内喷石墨粉
选用石墨粉做增碳剂，吹入量为40kg/t，预期能使铁液含碳量从2%增到3%。随着铁液碳含量逐渐升高，碳量利用率下降，增碳前铁液温度1600℃，增碳后平均为1299℃。喷石墨粉增碳，一般采用氮气做载体，但在工业生产条件下，用压缩空气更方便，而且压缩空气中的氧燃烧产生CO,化学反应热可补偿部分温降，而且CO的还原气氛利于改善增碳效果。
２、出铁时使用增碳剂
可将100—300目的石墨粉增碳剂放到包内，或从出铁槽随流冲入，出完铁液后充分搅拌，尽可能使碳溶解吸收，碳的回收率在50%左右。
宁夏龙腾顺达活性炭有限公司
名 称 ： 宁夏龙腾顺达活性炭有限公司
地 址 ： 宁夏石嘴山市大武口区
联 系 人 ： 唐小姐
手 机 ：
Q Q ： 3195997413
E-mail ： 3195997413@qq.com
网 址 ： http://ltsdhxt.1688.com/?spm=0.0.0.0.sSEfoR
Product introduction:
Iron and steel industry in the casting, cast iron, cast steel, cast will have a requirement of carbon, then carburizing agent, as the name implies, is to increase the carbon content of molten iron, for example, in charge used in smelting pig iron, scrap steel, scrap, pig iron carbon content is high, but purchasing price relative scrap is higher section of, so the increase in scrap amount invested, pig iron reduces the amount invested, and carburizing agent, can play a role in reducing the cost of castings.
In the smelting process, due to the ingredients or improper loading and decarbonization excess and other reasons, sometimes resulting in steel carbon content did not reach the top of the requirements, then to the carburization of molten steel. Recarburizer used a carbon electrode powder, petroleum coke, iron powder, charcoal powder and coke powder. Smelting, high carbon steel, containing less impurities in oil Jiaozuo carburetant. The top blown converter steelmaking carburant is high fixed carbon, ash, volatile matter, sulfur, phosphorus and nitrogen impurity content is low, and dry, clean, moderate granularity.
Buyers notice:
Using carburizing agent:
One, furnace input method:
Recarburizer used in induction furnace for melting, but the specific use according to the technological requirements are not the same.
1, in the intermediate frequency electric furnace for smelting of recarburizing agents, according to the ratio of and carbon equivalent requirements with the mixture into furnace in the middle and lower part and recovery rate can reach more than 95%;
2, if the lack of adjustment of carbon carbon content when it first hit the net furnace slag, plus carburant, by raising the temperature of molten iron, electromagnetic stirring or artificial stir to dissolve carbon absorption, recycling rate in about 90%, if the use of low-temperature carbonization process, the melt furnace charge only a part of, the molten iron temperature lower, all recarburizer one-time addition of iron liquid, also with solid charge will pressing it into the liquid iron does not let its exposed out of the surface of the molten iron. The method of iron liquid carbon can reach more than 1%.
Two, outside the carburizing furnace:
1, package graphite powder spraying
Choose recarburizer graphite powder, blow into the amount of 40kg/t, is expected to make iron carbon content increases from 2% to 3%. With the carbon content in liquid iron is increased, decreased utilization of carbon, carbon before the molten iron temperature is 1600 degrees centigrade, the average is 1299 DEG C after carburizing. Graphite powder spray carbonization, generally uses nitrogen as a carrier, but under the condition of industrial production, it is more convenient to use compressed air, and the compression of oxygen in the air generated by the combustion of CO, the chemical reaction heat can compensate part of the temperature drop, and co reducing atmosphere conducive to improve recarburizing effect.
2, when the iron using recarburizer
Can be 100 - 300 to graphite powder carburizing agent into the bag, or from the iron tank with flow into, the end of the liquid iron after fully mixing, as far as possible to dissolve carbon absorption, carbon recovery rate in about 50%.
宁夏龙腾顺达活性炭有限公司
名 称 ： 宁夏龙腾顺达活性炭有限公司
地 址 ： 宁夏石嘴山市大武口区
联 系 人 ： 唐小姐
手 机 ：
Q Q ： 3195997413
E-mail ： 3195997413@qq.com
网 址 ： http://ltsdhxt.1688.com/?spm=0.0.0.0.sSEfoR